In statistics, the mode of a set of numbers is the value that appears most frequently. If a set has two modes, it is called bimodal. This means there are two different values that appear with the same highest frequency in the data set.
For example, consider the set of numbers: 1, 2, 2, 3, 4, 4. Here, both 2 and 4 appear twice, which is more frequent than any other number in the set. Therefore, this set has two modes: 2 and 4.
Having two modes can indicate that the data comes from two different sources or populations. It can also suggest that the data has a dual-peak distribution, which might be important for further analysis or interpretation.